Living Environment Midterm Review

Question 1

In a cell, all organelles work together in order to

Accepted Answer

maintain homeostasis

Question 2

The change in appearance of the cell from A to B likely resulted from

Accepted Answer

more water moving out of the cell than into the cell

Question 3

This cell produces oxygen. Which structure allows the passage of this oxygen to the environment

Accepted Answer

B

Question 4

The way a protein molecule is folded determines the shape of the molecule, which determines the

Accepted Answer

function of that protein

Question 5

Which cell organelles are considered sites of aerobic respiration in plant and animal cells?

Accepted Answer

mitochondria

Question 6

Which of the following equations represents cellular respiration?

Accepted Answer

glucose + oxygen --> carbon dioxide + water

Question 7

The structure most closely associated qith the destruction of worn out cell organelles is the

Accepted Answer

lysosome

Question 8

Which of the following is a building block used in the formation of carbohydrates?

Accepted Answer

monosaccharide

Question 9

The “lock and key hypothesis” attempts to explain the mechanism of

Accepted Answer

enzyme specificity

Question 10

Which of the following compounds is the main source of energy for living things?

Accepted Answer

carbohydrates

Question 11

Molecule A passes through a membrane but molecule B does not. What could A and B be?

Accepted Answer

molecule A is a simple sugar and molecule B is a starch

Question 12

Which substance(s) is(are) commonly used as building blocks of proteins?

Accepted Answer

amino acids

Question 13

Which structure is found ONLY in animal cells?

Accepted Answer

centrioles

Question 14

Homeostasis is maintained in a single-celled organism by the interaction of

Accepted Answer

organelles

Question 15

The pH scale is a measurement system that indicates the number of

Accepted Answer

H+ ions in solution

Question 16

A student noted that 22 chairs in a classroom are red. this is an example of a(n)

Accepted Answer

observation

Question 17

diagrams, tables, and graphs are used by scientists mainly to

Accepted Answer

organize data

Question 18

The process of active transport requires the most direct use of

Accepted Answer

ATP

Question 19

A coverslip should be used for preparing a

Accepted Answer

wet mount of elodea (a simple plant)

Question 20

To measure and pour 10 mL of a solution into a test tube, the best procedure would be to

Accepted Answer

use a graduated cylinder

Question 21

Which phrase best describes cellular respiration?

Accepted Answer

change of chemical energy in food molecules to a usable form

Question 22

The development of the cell theory was most directly related to the

Accepted Answer

improvement in the microscope and microscope techniques

Question 23

Which two terms are considered to be opposite processes?

Accepted Answer

digestion and synthesis

Question 24

Movement of water across a membrane from high concentration to low concentration is

Accepted Answer

osmosis

Question 25

What is the approximate percentage of protein digested after 4 hours?

Accepted Answer

13%

Question 26

The three particles that make up an atom are

Accepted Answer

protons, neutrons, and electrons

Question 27

According to the cell theory, which statement is correct?

Accepted Answer

cells come from preexisting cells

Question 28

Which organelles synthesize the protein components of cell membranes?

Accepted Answer

ribosomes

Question 29

Which activity is represented in the diagram of the amoeba shown below?

Accepted Answer

phagocytosis

Question 30

Plants aren&#x27;t growing well. Its hypothesized the soil is too acidic. To test this the you could

Accepted Answer

change the pH of the soil

Question 31

Which structure, composed of proteins and lipids, aids in maintaining homeostasis in the cell?

Accepted Answer

cell membrane

Question 32

The destruction of ATP molecules in a cell would most immediately interfere with the process of

Accepted Answer

active transport

Question 33

Which two cell structures are most closely associated with energy changes in a plant?

Accepted Answer

chloroplast and mitochondria

Question 34

Based on the distribution of the molecules. what would likely happen after a period of time?

Accepted Answer

The concentration of O2 will increase inside the cell

Question 35

The ability of the human body to maintain a constant temperature is an example of

Accepted Answer

homeostasis

Question 36

Which concept is not part of the cell theory?

Accepted Answer

all cells are genetically identical

Question 37

A student sees that an organism is green. A conclusion that can be drawn from this is that

Accepted Answer

not enough info is given to tell if it is a plant or animal

Question 38

If this process is stopped by a poison at X, there would be an immediate effect on the release

Accepted Answer

of oxygen

Question 39

What is the energy required to start a reaction?

Accepted Answer

activation energy

Question 40

Proteins that act as biological catalysts are called

Accepted Answer

enzymes

Question 41

Solutions that contain concentrations of H+ ions lower than pure water

Accepted Answer

are bases

Question 42

Which substance is an inorganic molecule?

Accepted Answer

water

Question 43

The organelle most closely related with the manufacture of proteins within the cell is the

Accepted Answer

ribosome

Question 44

When cells are viewed under a microscope, what would make the nucleus in the cells more visible

Accepted Answer

staining the cells with an iodine solution

Question 45

Which statement describes all enzymes?

Accepted Answer

they affect the rate of chemical reactions

Question 46

Which substances should be used to determine the acidity at which an enzyme works best?

Accepted Answer

pH or litmus paper

Question 47

Which process is best represented in this diagram?

Accepted Answer

active transport

Living Environment Midterm Review

Questions 47

Living Environment Midterm Review

Questions 47